Pillow



FIG. 1 is a perspective view showing my new design;

FIG. 2 is another perspective view;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a side view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a pillow, as shown and described. 